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当前的电网调度与变电站自动化系统之间存在大量的重复性工作，而相互间的独立性又很强，不利于其高效率、高可靠和智能化发展，客观上有加强贯通性设计的需求。对限制调度和变电站自动化系统应用贯通的模型、数据、图形、通信规约等基础问题进行了梳理，分别从模型、数据库、图形一致性和通信规约支撑4个方面对贯通技术进行剖析。指出统一的模型及其配置机制是实现调度和变电站自动化系统贯通设计的基础，数据库一致性是减少两端重复工作、实现高效和智能化互动的关键，在模型和数据库一致性基础上，图形共享和通信规约方案有灵活的选择方式。

文章介绍了宽带光纤接入网系统和其中的几种主流接入方式,并详细比较了几种接入技术在应用上的优缺点,最后给出了建议和展望.

为扩大大豆油的应用范围，采用脂肪酶Novozym435催化大豆油环氧化改性合成环氧大豆油，对环氧大豆油进行了红外光谱和核磁共振氢谱表征，并考察其流变学和摩擦学性能。结果表明：成功合成了环氧大豆油；相较于大豆油，环氧大豆油的黏度指数增大，黏温性能更优异；相较于矿物润滑油和大豆油，环氧大豆油的平均摩擦系数及磨损体积减少率分别为21.6%、17.0%和71.2%、64.9%，减摩抗磨性能显著提升。环氧大豆油可在摩擦表面形成致密、厚实的物理化学吸附膜，从而有效减摩抗磨，提高润滑性。In order to expand the application range of soybean oil (SO), lipase Novozym435 was used to catalyze the epoxidation modification of SO to synthesize epoxidized soybean oil (ESO), and the ESO was characterized by infrared spectroscopy and nuclear magnetic resonance hydrogen spectroscopy, and its rheological and tribological properties were investigated. The results showed that the ESO was successfully synthesized; compared with SO, the viscosity index of ESO increased, and the viscosity-temperature performance was better; compared with mineral lubricant and SO, the reduction rates of average friction coefficient and wear volume of the ESO were 21.6%, 17.0%, and 71.2%, 64.9%, respectively, and the friction and wear reduction performance was significantly improved. ESO can form a dense, thick physicochemical adsorption film on the friction surface, thus effectively reducing friction and anti-wear and improving lubricity.

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Copyright of Acta Scientiarum Naturalium Universitatis Sunyatseni / Zhongshan Daxue Xuebao is the property of Sun-Yat-Sen University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of South-Central Minzu University (Natural Science Edition) is the property of Journal of South-Central Minzu University (Natural Science Edition) Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Tianjin Medical Journal is the property of Tianjin Medical Journal and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Petroleum Geology & Oilfield Development in Daqing is the property of Editorial Department of Petroleum Geology & Oilfield Development in Daqing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Summarizing the research progress in the design, synthesis, and application fields of boron difluoride complexes can reveal the current hotspots and difficulties in research, provide direction guidance for future research, and expand the application fields of optoelectronic functions. Boron difluoride complexes are currently mainly divided into three categories: N, N-bidentate organic boron difluoride complexes, N, O-bidentate organic boron difluoride complexes, and O, O-bidentate organic boron difluoride complexes. This article systematically reviews the synthesis methods, and applications of these three types of boron difluoride complex functional materials, which will help promote the research and application of new materials, promote interdisciplinary cooperation, and have important scientific significance and application prospects. [ABSTRACT FROM AUTHOR]

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In recent years, ultra-fine fiber nonwovens are widely used in various fields due to their excellent performances, and play a vital role in in our daily life. Currently, there are various methods to produce ultra-fine fibers, such as electrospinning, centrifugal spinning, flash spinning and melt spinning. Among them, melt-spun bicomponent ultra-fine fibers have broadly drawn attention due to the selective diversity of combinations of raw materials and processing techniques. In addition, melt-spun bicomponent fibers are dominant in the market because of their ability to be produced on a large scale. However, industrial producing of melt-spun bicomponent ultra-fine fibers usually suffers from problems such as high energy consumption, large diameter and environmental issue, which limit their high-quality development and applications in future. During the practical processing, selection of different polymers, use age of spinning packs of different sizes, and adjustment of different spinning parameters have significant impacts on the formation of melt-spun bicomponent ultra-fine fibers. Therefore, it is of great significance to regulate the influencing factors in the forming process of bicomponent ultra-fine fibers to further improve their comprehensive performances. In order to understand the nature of melt-spun bicomponent ultra-fine fibers more comprehensively, this paper took segmented-pie fibers and sea-island fibers as the research matrix, explored the spinning and forming mechanism of melt-spun bicomponent ultra-fine fibers and its influencing factors; elaborated the diverse open fiber processes of melt-spun bicomponent ultra-fine fibers, and summarized the applications of melt-spun bicomponent ultra-fine fibers in different fields. As for spinning process, by using conjugated melt spinning with different types of melt distribution systems, segmented-pie fibers and figured sea-island fibers could be prepared respectively. In the meanwhile, the forming mechanism of unfigured sea-island fibers was clearly revealed. In the spinning process, blended polymer droplets were stretched into long or elliptical shapes in the spinning pack, which is the main reason for the uneven diameters of unfigured sea-island fibers compared to figured sea-island fibers. There are notable differences in the properties of figured and unfigured sea-island fibers. Moreover, the finer fiber diameters can be obtained by increasing the drawing multiplier and improving the properties of the polymer feedstock. As for fiber splitting process, there are three types of fiber splitting methods, namely mechanical, chemical and thermal means. It was found that energy consumption of fiber splitting can be effectively reduced by decreasing the interfacial bonding between polymers. Significantly, the use of water-soluble polyvinyl alcohol (PVA) points a way for developing green bicomponent ultra-fine fibers. Due to the low dimension, high specific surface area, and facile functional finishing, melt-spun bicomponent fibers have a wide range of applications such as ultra-fine fiber artificial leather, air filer, medical and health materials. Melt-spun bicomponent ultra-fine fibers show excellent comprehensive performance and have wide application prospects. However, there are still several tasks for preparing melt-spun bicomponent ultra-fine fibers, such as reducing energy consumption and pollution during melt spinning and fiber splitting, and preparing melt-spun bicomponent ultra-fine fibers with finer diameters and excellent properties. In the selection of raw materials, polymer raw materials with different excellent properties should be further developed, so as to broaden the diversified combinations of raw materials for melt-spun bicomponent fibers; in the process of preparation, the research and development of precision components and the optimization of molding process should be carried out, so as to improve the performance of melt-spun bicomponent fibers and realize the further refinement the fiber diameters; about the fiber splitting, along with the concept of green environmental protection, low energy consumption, no chemical reagents and efficient green fiber splitting process should be developed. Water-soluble fiber opening, as a green fiber opening method, provides a good development direction for bicomponent ultra-fine fibers. Water-soluble polymers provide a good direction for the development of melt-spun bicomponent ultra-fine fibers. And with the continuous development of the nonwoven industry, it is believed melt-spun bicomponent ultra-fine fibers will develop toward the direction of green, multi-function and high performance in the future, so as to better benefit mankind and society. [ABSTRACT FROM AUTHOR]

Copyright of Silicone Material is the property of Silicone Material Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Multipurpose Utilization of Mineral Resources / Kuangchan Zonghe Liyong is the property of Multipurpose Utilization of Mineral Resources Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Food & Machinery is the property of Food & Machinery Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Application Research of Computers / Jisuanji Yingyong Yanjiu is the property of Application Research of Computers Edition and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Aesthetic & Plastic Surgery is the property of Chinese Journal of Aesthetic & Plastic Surgery Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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骨质疏松症是一种以骨量减少和骨组织微结构破坏,导致骨脆性增加和骨折危险性增加为特点的全身性 疾病。全球范围内,骨质疏松症女性患病率高于男性,且近年来随着年龄的增加患病率大幅上涨。各国骨质疏松症 的患病率均处于较高水平,与环境、生活习惯或种族的差异等有关。在不同地区、不同民族,我国骨质疏松症的患病 率有较大差异。在骨质疏松症的管理中,多数国家建议对人群进行骨折危险因素评估,再根据结果考虑是否进行骨 密度测量和骨折风险评估,确定防治方案。针对骨质疏松症的防治,既要加强患病人群的筛选和管理,也要倡导防 治并重及个体化治疗。未患病或低风险者需要保持健康的生活方式,而中高风险者需根据自身情况,在医生指导下 选择合适的治疗方案和药物,同时通过健康的生活方式防止或延缓骨量的降低,目前常用的药物有骨吸收抑制剂和 骨形成促进剂,包括双膦酸盐类、雌激素、降钙素､RANKL抑制剂、甲状旁腺激素类似物等。 关键词:骨质疏松症;骨质疏松症并发症;骨折;骨吸收抑制剂;骨形成促进剂;双膦酸盐类药物;雌激素 [ABSTRACT FROM AUTHOR]

Copyright of Bearing is the property of Bearing Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Electric Machines & Control / Dianji Yu Kongzhi Xuebao is the property of Electric Machines & Control and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Brewing is the property of China Brewing Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective To investigate the effects of decitabine (DAC) combined with arsenic trioxide (ATO) on proliferation and apoptosis of AML cells and its underlying molecular mechanism. Methods AML cell lines were treated with DAC and ATO alone or in combination. CCK8 was used to detect cell viability;Compusyn software was used to analyze the synergistic effects of the combination treatment;Flow cytometry was applied to determine the apoptosis and cell cycle distribution;Western blot was applied to detect the expressions of poly (ADP-ribose) polymerase (PARP), c-PARP, phosphatidylinositol 3-kinase (PI3K), p-PI3K, protein kinase B (Akt) and p-Akt. Results DAC and ATO alone inhibited AML cell proliferation in a concentration-dependent manner. The combination of the two drugs significantly inhibited cell proliferation, induced apoptosis and cycle arrest of AML cells (P＜0.05). Combination therapy reduced the phosphorylation level of PI3K and Akt (P＜0.05). Conclusions DAC combined with ATO may have anti-AML effect by inhibiting PI3K/Akt pathway, which provides new theoretical basis of DAC+ATO strategy for AML. [ABSTRACT FROM AUTHOR]

Copyright of Yellow River is the property of Editorial Board of Yellow River and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Shandong Medical Journal is the property of Shandong Medical Health Newspapers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)